refactor: don't save on Grapple.{select, cycle} + make cursor optional

lua/grapple.lua

@@ -137,7 +137,7 @@ function Grapple.select(opts)
     opts = opts or {}
 
     local app = App.get()
-    app:enter_with_save(opts.scope, function(container)
+    app:enter_without_save(opts.scope, function(container)
         local path, _ = extract_path(opts)
         opts.path = path
 
@@ -223,7 +223,7 @@ function Grapple.cycle(direction, opts)
     opts = opts or {}
 
     local app = require("grapple.app").get()
-    app:enter_with_save(opts.scope, function(container)
+    app:enter_without_save(opts.scope, function(container)
         if container:is_empty() then
             return
         end

lua/grapple/tag.lua

@@ -3,7 +3,7 @@ local Path = require("grapple.path")
 ---@class grapple.tag
 ---@field path string absolute path
 ---@field name string | nil (optional) tag name
----@field cursor integer[] (1, 0)-indexed cursor position
+---@field cursor integer[] | nil (optional) (1, 0)-indexed cursor position
 local Tag = {}
 Tag.__index = Tag
 
@@ -14,7 +14,7 @@ function Tag:new(path, name, cursor)
     return setmetatable({
         path = path,
         name = name,
-        cursor = cursor or { 1, 0 },
+        cursor = cursor,
     }, self)
 end
 
@@ -29,12 +29,20 @@ function Tag:select(command)
     command = command or vim.cmd.edit
     command(short_path)
 
-    -- If the cursor has already been set, update instead
-    local current_cursor = vim.api.nvim_win_get_cursor(0)
-    if current_cursor[1] > 1 or current_cursor[2] > 0 then
-        self.cursor = current_cursor
-    else
-        pcall(vim.api.nvim_win_set_cursor, 0, self.cursor)
+    if self.cursor then
+        local current_cursor = vim.api.nvim_win_get_cursor(0)
+        local last_line = vim.api.nvim_buf_line_count(0)
+
+        -- Clamp the cursor to the last line
+        local cursor = {
+            math.min(self.cursor[1], last_line),
+            self.cursor[2],
+        }
+
+        -- If the cursor has already been set, don't set again
+        if current_cursor[1] == 1 or current_cursor[2] == 0 then
+            pcall(vim.api.nvim_win_set_cursor, 0, cursor)
+        end
     end
 end